Valve



(Nolsaodel.)4

R. C. PAGE & P. H. SODEN.

VALVE.

N0. 338,771. Patented Mar. 30, 1886.

v UNITED STATES ,PATENT OFFICE.

'RANSOM .C. PAGE AND FRANCIS H. SODEN, OF CHICAGO, ILLINOIS.

VALVE.

SPECIFICATION forming par: of Letters Paten; Nofssa'wl. dated March so, 1886.

Application led Junc, 1885. Serial No. 169,913. (No model.)

To all whom it may concern:

Be it known that we, RANSOM C. PAGE and FRANCIS H. SODEN, both residing at Chicago, in the county of Cook and State of Illinois, and citizens of the United States, have invented a newand useful Improvement in Valves, of. which the following is a full description, ref` erence being had to the accompanying drawings, in which- Figure 1 is a longitudinal section; Fig. 2, a transverse section on line :v of Fig. l; Fig. 3, a side elevation of the controlling-valve; Fig. 4, an end elevation of the controllingvalve; Fig. 5,. a detail in section on line y y of Fig. 2.

rIfhis invention relates to valves by which the passage of steam, air, Water, or other gas or liquid will be controlled in part by the gas or liquid passing through the valve, and has for its objects to construct a valve through which steam, air, water, or other gas or liquid will iiow when the valve is open, and which will be closed to shut off the flow of the gas or liquid bythe pressure of such gas or liquid acting on a piston or head, all as hereinafter more specifically described, and pointed out in the claims.

and with an opening leading into the chamber A and forming the outlet from such chamber,`and a coupling, A4, for the attachment of the secondary chamber, in which the piston or head operates.

B represents a shell having a cylindrical interior chamber, B', closed at the end by a cap, B, which, as shown, is screw-threaded onto the end of the shell B. The other end of the shell B is provided with a boss, B3, having an exterior screw-thread to enter the coupling A4 and connect the two shells A B together.

C represents a piston or head fitting the chamber B', and suitably packed to form a tight joint with the walls of the chamber. This piston is secured in any suitable manner to the end of a stem, C', which passes through the boss B3, and a stuffing box or plug, C, screw-threaded onto the end ofthe boss, so as to make a close tit for the stem.

D represents a valve attached to the projecting end of the stem C', and having its periphery b formed to fit the seat a of the inletopening into the chamber A', so that such inlet-opening can be opened and closed. This valve, as shown, is attached to the end of the stem C by a head, D', screw-threaded onto the end of the stem, and a head, D", screw-threaded into the end of the valve, by which means the valve can be adjusted so as to t properly onto thev seat.

E represents a ppe,'.connected at one end by an elbow-eoupling,E, to a pipe, c, leading into the inlet, and connected at the other end by an elbow-coupling, E', to a pipe, d, which leads into the shell or case B and communicates with a passage, e, running longitudinally of such case or shell.

F represents a plug-valve having a stem, F', and held in place by a cap or stuffing-box, F", screw-threaded onto a boss on the case or shell B, in which the valve is located. This valve has a port, f, running transversely from its exterior to its center and communicating with a longitudinal opening, h, and a second port, g, also communicates With this openlng h, and the two ports fg stand at right angles,

or nearly so, to each other, asshown by they dotted lines in Fig. 4. 'Il he openiugh communicates with an opening, t', extending` through the shell or case B, 'and entering the chamber B', so that when the portf is in commuuication with the passage-c the gas or iiuid will pass through the port f into the passage' h, and through the opening t' into the chamber B.

The shell or case B, in line with the center of the plug-valve F, is provided with a passage or opening, j, which extends from the valve around the shell or case to the opposite side and communicates with the passage k, running longitudinally of the shell or case and communicating with the chamber A', as shown in Fig. 1, and the passage or openingj is shown by the dotted and full lines in Figs. l and 2,; and this passage, when the plug-valve is properly turned, communicates with the port g, so that the gas or iiuid can pass from the cham- IOO ber B' into the passage ,-through the opening h, into the port g, around through the passage j, into the passage k, and into the chamber A'. In use the valve is to be attached by the coupling A" to the pipe or conduit through which the steam, ain-water, or, other gas or liquid passes; and when the gas or liquid is to pass through lthe chamber A' and out at A3 the valve Dis held above the seat by ro pressure on its end face, and from the inlet A" by the action ofthe spring G, 'located around the stem C', between the piston-head Gand the end wall of the chamber, as shown in Fig. l,

to do which the plug-valve F is turned to have the port g thereof in communication with the passage j, so that the piston or head C is left free from the pressure of the gas or fluid in the chamber B', the gas or liquid passing out from back of the piston as communication is opened through the passages h if, port g, and passages j k, and as soon as the pressure is relieved and the piston returned to open the valve,the valve F is turned to close thepqssages j lc from commul'licating with the port f7, and

2 5 also to close the communication between the` poi-tf and passage e, thus preventing backpressure in the chamber B' from Ithe passages j lc and direct pressure from the passage e,

by which means, it will be seen, the chamber.

B'is entirely free from pressure; and when from any cause'it is desired to close the inlet into the chamber A'the plug-valve F is rotated or turned to bring the port f into line with thepassage e, such turning carrying the port g still farther away from its point of communication with the passage j, and leaving a clear passage through the port j' and openings h t into the chamber B', and in this position thc gas or tluid from the conduit passes into the pipe c, thence through the pipe E into the pipe d, and, entering the passage e, passes through the port j' and openings h i 'into the chamber B', and forces forward the piston or head C, closing the inlet by forcing the valve down onto the seat a,- and the inlet will be held closed until the pressure of the gas or Huid on the piston or head C is removed by turning the plug-valve to close the port f and open the port g for the gas or fluid to pass out throughv the port g into the passage j k to the chamber A', and when this occurs the spring acts and opens the valve, allowing It will-thus be seen that by means of the the passage of which is to be controlledlas the pressure of such gas or liquid on t-he piston or head forces it forward to close down the controlling-valve, for the passage through which the gas or liquid enters the chamber A', and in closing down the valve the pressure of t-he gas or liquid only is used; and in order to have no resistance to speak of forward of f the pist-on in closing down the Valve a hole or opening', l, is provided through the wallof the shell B for the discharge of air forward of the piston. Y

When the valve is open for the admission of gas or liquid through the chamber A', the

plug-valve -F is to be turned to entirely shut oil' the ports j' g from communication with Y the passages e j, by which means the full pressure of the gas or liquid is utilized without passing through the chamber Band creating a pressure on the piston() that might close or partly close the valve D.'

XVhat we claim as new, and desire to secure by Letters Patent, is as follows:

1. The combination of the shell orV case B,

having the chamber B', ports e, i, j, andk, the cock F, having the passagesfg h, and the exterior pipe, E, with the shell or case A, havingthe chamber A', and the stem C', piston C, and valve D", substantially as and for theV purpose herein set forth. I n

2. The case A,'having the chamber A', case B, having the chamber B', valve C, stem C',

spring G, and valve D, in combination with the outlet .0, pipe E, inlet d, and' passage e, and a controlling-valve and passages leading to and from the chamber B', for opening and closing the valve, substantially as specified.

RANSOM C. PAGE. FRANCIS H. SODEN.

Witnesses:

ALBERT H. ADAMs, O. W. BOND. 

